Overhead traveling dispenser unit



July 7,1959 B. A. scHlLTz 2,893,422

OVERHEAD TRAVELING DISPENSER UNIT Filed Feb. 3, 1958 4 Shees-Sheet 1 INV ENT OR. BR 0c; ,4. SCI/IL rz lrramvsvs July 7, 1959 B. A. SCHILTZ 2,893,422

OVERHEAD TRAVELING DISPENSER UNIT iled Feb. 3, 1958- J I 4 Sheets-Sheet 2 Q INVENTOR.

BRUCE A. Sc/u/Jz 4 rroxurgs y 1959 B; A. SCHILTZ 2,893,422

' OVERHEAD TRAVELING DISPENSER UNIT Filed Feb. s, 1958 4 Sheets-Sheet 3 FIG. 4

INVENTOK, Bin/c54- Sex/ 4r;

km MQ mwmm July 7,1959 5, ASCF'HLTZ 2,893,422

OVERHEAD TRAVELING DISPENSER UNIT Fil ed Feb. 3, 1958 4 Sheets-Sheet 4 INVENTOR. BRUCE A. Sew/4 72' 42M am 54 Arron/Ev:

United States Patent *6) 2 34 2 ovnRHEAnTRAvnnING DISPENSER ra e A Sshfla aeus at Application February 3, 19 58, 2,1; c ,1-; ;1z).

The invention ,;h ere in ;has relation to an. overhead. dis: penser. unit devised; to be, especiallyin'sefnl for the. purpose of; selectively seryicing automotiveivehicles, in a, roW .side by; side, asfor example, on parking lots, with gasoline, water and air.

In the accompanyingdrawings forming a part of. this specification,

Fig. l is a View of,a dispenser unitmade according to the invention; showing. acarriagethereofin end elevation and;b oorns'thereof in side'elev'ation;

Fig. 2 is a plan view, partially broken away,.of, the. dispenser unit as it would appear from the position. ofline 2:2inFig, 1;

Fig. 3..is aview of thetdispenser unit, disclosing the carriage: thereofin side eleyationand a; boom. thereof in endlelevation, as saididispenseriunit would-appear from thepositonrofiline.3+3' in Fig.3 1;

Fig. 411 8211 enlarged detaihsectionalaview, takensub: stantially ontliner4, -'4..in 'Fig. .11;

Fig. isja detail sectional view taken substantially online 55 inFig. 4;

Fig; '6 ,is an enlargedtfragmentary side elevationalyiew disclosing an endportionio'fn boomiofzthe dispenserunit andta display case thereon; .and.

Fig.1 is an enlarged detail sectionalview taken on line 7-7 in Fig. 2.

Spaced, upright posts 10:.supportparalleLbrackct members '11. at:opposite .sides, of theupright posts, and Lav hori-. zontal channeltmember 12: is between-the.brackettmemhers and. above. the posts and supported thereby. The upright posts 10 extendfrom the: longitudinal center of an elongated. rectilinear base.13.ifor.said. upright posts which divides. a parking. space into sections one otiwhich is at either side of. the rectilinear base. Automotive vehicles, su'chi-as 14, are.tohehparkedlin a-row alongf the length .of and in adjacent relationtoteach-of the opposite sides of said rectilinear v base. 1

Spaced, parallel, elongat'edsI-beams, each denoted 15', are supported uponbracketmembers ll at opposite sides of and in parallel relation to the u'pright posts: 10 and the horizontalchan nelumember '12. Each I-bcarn 15 includes a lower flange portion 1 6 restedupon bracket members at the same side of said upright-posts and horizontal channel member'and: an uppe'rf'flange portion 17 The upper flange portions 175 01? the I' beanis '15,; respectively, are 'in a single horizontah plane: abovethe elevation of automotive vehicles toLZbe supp'liedowith g as, water and air bythe dispensen'unit;

A carriage'18 of thedispenser unit issupported upon the upper flange portions "17 of 'the I-heams 15 for longitudinal movement along said I- beams. "As disclosed, I the opposite ends of spaced, transversely extendingshafts 19', one adjacent each of the oppositeends of said-- carriage and suitably and conveniently rotatably mounted there'on, fixedly support rollers 20 whichare lidable' upon' the I beam at the corresponding side off the carriage; Also, a lower portion of said carriage supports longitudinally spaced, outwardly extending projections,- each-indicated V 2,893,422 en e J li: 12

2: 21, whichsupport rollers-22 in proximate relation to the internal'surface of the body anda lower surraee'or-tne upper flange' pdrtion of the I-beam at ihec'or'respondni g' side'of thecarriagej The projections 21am rollers '22? are for maintaining the rollers 20 in proper mainta ned position on the I-beams andfor precluding thepossibility of tiltingo'f said carriage. 7

The carriage'lS-is of rectilinear configuration and cont stitutes a housing for elements of thedisp'ensenunit', horizontal hollow booms, each represented "23} t res ported on the housing ofsaid carriage and extend ue wardlyfrorn' opposite sides thereof. "The' holl booms are of duplicate construction, except that one isiright' the other-left, andjin 'aJi'n'ed; relation, as we ll its-n1: the plane of andperpendicularrelation to the carriage its housing. Said hollow booms also contain 'leineiitshfi the dispenser unit. i

"Spaced, transverse shafts, denoted tively, are rotatably mounted in the housing of the'c'ai riage. The transverse shaft 24 fixedly supports; aliried drums, denoted 26 and 27, respectively, separated'by nular partitions, eachrepresented 28,"also rigidwith transverse shaft. Thetranverseshaft 2'5 fixedly supports alined drums, indicatedZQ and 30," respectively, separated by annular partitions, each designated 31." A gear 32 fixedly supported on thetrans'verse'shaft 24'- is-in'rnesh with a gear 33 fixedly supported onthe' transverse shaft-25L Hoses for'wate'r, high test gas and regular gas are indicated 34,35 and'36, respectively, and a flexible cable for lead wires, from a source not shown, is represented 37i The housing of thec'arriage 18 is'o'pen at the botto'niahd at anend thereof, the left end in Figs. 4 and"5,"to rec eive the hoses 34, 35,36 and theflexible cable 37', and the latter extend upwardly through an opening an upri'ght po'st 10 and along the uppe r surface of the chanf nelmember 12 Said hoses also extend from sources Bf: water and gas not shown, and the portions of the hoses andfiexible cable at and in adjacent relationto the opening 38 are immovable during operation'of the dispenser. unit. That is, the 'hoses and flexible cable are retained in fixed relation to their sources of supply and to the upright post through which they extend.

The high test gas hose'35 rides the surface of anidler 39 opposite the location of entry of said high: test gas hose intothe housing'of the carriagelii, andth encejwinds in clockwise direction aroun'd the drum 27. The idler 39 is on a transverse stub shaft in the carriage housing parallel with and in adjacent relationto the upper surface, of the channel member 12. The interior ejndfof the high test gas hose 35 is in communication, byway of a slip ring structure 40, with a tubular connection 1:1 which in turn isconnected with a conduit 42'for high testlga s, The conduit 42 extends through the hou'singof the car; riage 18 and into and'along the length of each oftthe hollow booms 23 The regular gas hose 36 rides the surface ofan idler 43 opposite the location of entry of said regular gas hose into the housing of the carriage and thence winds in counter,- clockwise direction around the drum 30. The idler 431s on a transverse stub shaft in the carriage housing parallel with and in adjacentrelation to the upper surface oflthe channel me'r'nberf12. The interior end of the regular gas hose 36 is in communication, by way of aslip ring et ic nut: 44, with a tubular, connection 45 which in turn is con; nected with a conduit f r egulate he q ldll 4 extends through, the' housing of the carriage and, imq along the length of each of the hollow boomsggli,

' The water hose 34 rides the surface ofan idler, similar to the idler 39, and thence winds in clockwise direg 9n around the drum 26. T heinterior end of said water hose is in commu'nic'ation, by way of a slip ring structure 47,

with a tubular connection 48which in turn is connected 24 and 25', respecat49 with a water dispensing hose 50 wound upon a. reel 51. The water dispensing hose extends downwardly through the base of the housing of the carriage. The reel 51 unwinds in response to downward pulling of said water dispensing hose and is spring actuated to be wound up when the water dispensing hose is released. A valve, not shown, will control flow of water out of the water dispensing hose.

' The flexible cable 37 rides the surface of an idler, similar to the idler 43, and thence winds in counterclockwise direction around the drum 29. The interior end of said flexible cable is connected, by a slip ring structure 52, with a cable 53 containing lead wire for circuits of several different electric motors which the dispenser unit employs.

A reversible electric motor 54, suitably and conveniently supported in the housing of the carriage 18, is for winding the hoses 34, 35, 36 and the flexible cable 37 upon and unwinding said hoses and flexible cable from their respective drurns, as well as for accomplishing travel of the carriage 18 in either direction along the I-beams 15.

A chain 55 rides a pinion 56 fixed on the drive shaft of the motor 54 and also rides a gear fixed on a stub shaft 57 supported in the carriage housing. A chain 58 rides a pinion 59 fixed on the stub shaft 57 and also rides a gear 60 concentric and rigid with the gear 32. A gear upon and rigid with the stub shaft 57 is in mesh with a gear upon and rigid with a stub shaft 61. A chain 62 rides a pinion 63 fixed on the stub shaft 61 and also rides a gear 64 concentric and rigid with one of the transverse shafts 19 fixedly supporting a roller 20.

, An electric motor 65 in the housing of the carriage 18 is for driving a compressor 66 for maintaining air under pressure in a reservoir 67. A tubular connection 68 for air under pressure leads from the reservoir to a conduit 69 which extends through said housing into and along each of 'the hollow booms 23. An air dispensing hose 70 in the outer end portion of each hollow boom 23 extends downwardly, as at 71, through a lower wall of a display case 72 rigid with the corresponding hollow boom. The air dispensing hoses 70 are wound upon reels 73 in the hollow booms, and the outer ends of the conduit 69 are connected, as at 74, with the interior ends of the air dispensing hoses 70. The reels 73 unwind in response to pulling the air dispensing hoses downwardly and are spring actuated to be wound up when said air dispensing hoses are released. Valves, not shown, will control flow of air through the air dispensing hoses.

The opposite ends of the conduit 42 for high test gas lead into casings 75 in outer end portions of the booms 23, and high test gas dispensing hoses 76, wound on reels 77, lead from said casings by Way of tubular connections 78 to outlet nozzles 79. The casing 75 will contain usual gas pumps, not shown, and the dispensing of high test gas will be accomplished in ordinary manner. The reels 77 will unwind in response to pulling the high test gas hoses downwardly and be spring actuated to be wound up when said high test'gas hoses are released.

display case, the circuits for said motor 54 will be broken. Interlocks for preventing travel of the carriage 18 when any of the hoses is in use can be employed. Or a manually operated switch for opening the circuits for the motor 54 when this is intentional can be included.

Meters 87, at the locations where gas is dispensed, employed to display the amount and value of each purchase, can be of usual or preferred construction.

When an automotive vehicle which is not alined with the dispenser unit is to be serviced, with gas, water and/ or air, a circuit for the reversible electric motor 54 will be closed, as by manually actuating a switch, to cause said electric motor to advance the dispenser unit in appropriate direction to be alined with the automotive vehicle, and the circuit will be broken when the dispenser unit has reached the intended and proper position. The hoses 34, 35, 36 and the flexible cable 37 will be wound up on the drums with advancement of the dispenser unit in one direction and unwound from the drums and laid out flat on the channel member 12 with advancement of the dispenser unit in opposite direction. Servicing of automotive vehicles will be accomplished in the customary manner while the dispenser unit is retained in stationary position.

The winding up and unwinding of the hoses and flexible cable and travel of the carriage 18 to extent and in direction to correspond are accomplished by the reversible electric motor 54 through the instrumentality of a unitary mechanism.

What is claimed is:

1. In a unit for dispensing a fluid, an elongated member, a carriage, devices supporting said carriage upon and for longitudinal movement along said elongated member, a rotatable element upon the carriage, a hose for fluid to lead from a source of supply thereof along the elongated member mounted on said rotatable element to be wound thereon and unwound therefrom, a conduit for the fluid extending from said hose, and means for selectively advancing said carriage in either of opposite directions The opposite ends of the conduit 46 for regular gas lead into casings St! in outer end portions of the booms 23, and regular g'as dispensing hoses 81, wound on reels 82, lead from the casings by way of tubular connections 83 to outlet nozzles 84. The casings 80 will contain usual gas pumps, and the dispensing of regular gas will be accomplished in ordinary manner. 7

The construction and arrangement will be such that the circuits for the reversible electric motor 54 will be broken when any of the gas dispensing hoses, or the water dispensing hose, or an air dispensing hose, is in use, thus to insure that the dispenser unit will remain stationary while beingemployed to service automotive vehicles. Referring to Fig. 7 of the drawings, the nozzles '79 and 84 there shown are situated as when in inoperative position to maintain switches, denoted 85 and 86, respectively, in the closed condition of circuits for the motor 54. When eithe of he oz les is emoved from the-corresponding along said elongated member and for causing said hose to be wound upon the rotatable element in response to advance of the carriage in one direction and unwound from said rotatable elment in response to advancement of said carriage in opposite direction.

2. In a unit for dispensing a fluid, an elongated member, a carriage, devices supporting said carriage upon and for longitudinal movement along said elongated member, a rotatable element upon the carriage, a hose for fluid to lead from a source of supply thereof along the elongated member mounted on said rotatable element to be wound thereon and unwound therefrom, a conduit for the fluid extending from said hose, a slip connection between an outlet end of said hose and said conduit, and means for selectively advancing said carriage in either of opposite directions along said elongated member and for causing said hose to be wound upon the rotatable element in response to advance of the carriage in one direction and unwound from said rotatable element in response to advancement of said carriage in opposite direction.

3. In a unit for dispensing a fluid, an elongated member, a carriage, devices supporting said carriage upon and for longitudinal movement along said elongated member, a boom supported by said carriage, a rotatable element upon the carriage, a hose for fluid to lead from a source of supply thereof along the elongated member mounted on said rotatable element to be wound thereon and unwound therefrom, a conduit for the fluid extending from said hose along said boom, and means for selectively advancing said carriages in either of opposite directions along said elongated member and for causing said hose to be wound upon the rotatable element in response to advancement of the carriage in one direction and unwound from said rotatable element in response to advancement of said carriage in opposite direction.

4. In a unit for dispensing a fluid, an elongated memher, a carrias devices supp ng aid carr age upon nd-fo on i u inal mor n alon y del ngat d; mem oom supported.- y', aidrri e ot abl for causing said hose to be wound upon the rotatable l m nt in spon e to, adva c ment. of e ar ia e, one direction; and; unwound from said rotatable element n e n to v nc men t a d a ge, n. ppos te. direction.

5, ll ni o d pensi aafiu n ns d mh a; r e p ov i g ar qu in e c pp t n aid. arri e pon ndfo on udina v nt: a o a l s m a a hol ow oo upp te ya carria a ta a ler l ment ai ousi a h se forfi i a e d; f om; a ourc of upp h r o lon he l n ted memb r moun d, n. id. o atabl lem n o e; Wo n he n; and nwo d refr m, a c n u t for the fluid extending from said;h ose intosaid hollow boom, and} means for selectively advancing said. carriage n her 95 M i ec ipns-a o u i l gated m mr b e r andfor causing saidhose to be wound upon the rotatable element inresponse to advancement of the carriage'in one direction. and unwound from said rotatable elementgin response to advancement ofi said, carriage in opposite direction.

6, -In a unit for dispensing-a fluid, an elongatedmemher, a carriage providing a housing, devices supporting saictcarriage upon and for longitudinal movement along said elongated member, a hollow boom supported by'said carriage, a rotatable element in said housing, a hose for fluid to lea d from a -source of supply there0f.along the elongated member mounted onsaid rotatable element to be wound thereon and; unwound therefrom, a conduit for the fluid extending from said hose into said hollow boom, a slip connection between an outlet end of; said hose and said conduit, and means for selectively advancingsaid carriage in either of opposite directions along said elongated. member and for-causing said hose to be woundupon the rotatable elementin response to adyanycement-v of the carriage in one direction and unwoundfrom saidrotatable element inresponse to advancement of said carriage in'opposite direction.

7,, ha unit for dispensing a fluid, an elongatedmember, a carriage, devices supporting said carriage upon and for longitudinabmovement along-said elongated member, booms at opposite; sides of, the, elongated member supported; by said carriage, a; rotatable element upon the carriage, a hose for fluid to lead from a source of supply thereof along the elongated member'mounted, on said rotatable element tobe wound. thereon and unwound therefrom, a conduit for the fluid extending from said hose along each of saidboom's, and' means for selectively advancing; said carriage in either of'opposite directions along, said elongated; member and for causing said hose to be wound upon the rotatable element in response to advancement of; the carriage in one direction and unwound from said, rotatable element inyresponse, to advancement of said carriagein opposite direction.

8, In a unit fol-dispensing afluid, an'elongated memher, a carriage, devices supporting. saidcarriage upon'and for longitudinal movement along said elongated member, booms at opposite sides of. the. elongated member supported by; said carriage, a rotatableielement upon the carriage, a hose for fluidto lead from a source of supply thereof. along the elongated member mounted on said rotatable element to be wound the reon and unwound therefrom, a conduit-for the fluid extending from said hose aflong eachof said booms, a slip connectionbetween an outlet' endof saidlhose and said conduit, and means tion and funwound from; said r a selec ivel ad ans as aidrsmi sa n; the f: P.- p e i e t causing said hose tobe wound uponthe rotatable element 1macaw lad ansems t a hsca ri ge in n ir tatable element in response to advancement of z sa id, carriage in opposite dicfiQ-n; v 4 l, a

9.. da u ;for dj pensing a fluid, an elongated memher, a carriageprovidi ahousing, devices supporting said.carriag eupon andi for longitudinal movement along said e long ated me'mbger, hollow booms supported by'and extending outwardly from opposite sides of said can'iage, arotatable elernent ngsaid lhotising, a hose for fluid to lead froma source of supply thereofalong the elongated member mounted. on said.rotatable element to be Wound thereon and unwoundlth retrom, a. conduit for the fluid extending froml s aid," ose intoeac h otfsaidhollow booms, and means, forise lec advancing .sa id carriage in either; v of. opposite directions along said elongated member andjorcansing said tobe. wound upon the rotatable element, inresponse to advanc'erne'ntv of the carriage in one direction and unwound from said rotatable element in response. :to advancement of said, carriage in opposite direction,

10. In; a/unitfo'r dispensingaafluid, an elongated member, a carriage providinga'lionsing, devices supporting said carriageupon iandjor longitudinalmoveme'nt along said elongated meinber, hollow booms supported by and extendingoutwardly from oppositefsides of saidcarria'ge, a rotatable eleinent insaidhousing, a hose for fluid to lead from a source ofrsup ply thereofalong the elongated membermountedon said rotatableelement to be Wound thereon-and unwound there tromaa conduit for the fluid extending from said hose into each of said hollow booms, a slip-connectionbetween anioutletend of. said hose and said conduit, and means. foi .selectively advancing said carriage in either ofoppositedirections along said elongated mernher an forcausing, said. hose to 'be Wound upon the rotatable element in response to .advancement of, said carriage, in one directionandunwound from said Qtata-ble element in re sponseto advancement of said carriage in opposite direction.

11. In a unit fordispensinggasoline and air, an elongated member, a carriage, devices supporting, said- 'carriageupon and. for longitudinal moyement. along said elongatedmember, a rotatable element upon the carriage, a hose for-gasoline to lead from -a source of supply thereof along the elongated member mountedon said rotatable element to bewound thereon and unwound therefrom, a conduitfor the gasoline extending, from-said hose, a reservoir on said-carriage, mechanism for providing air under pressure in said reservoir, a connection for-air leading 7 from the reservoir, and .n eansforj selectively advanc ing said carriage in either of ,oppositedirections along said el'ongatedmember andlforj causing said hose to-be Woundupon therotatable element:in response to advancement' of the carriage in one direction'and unwound from said rotatable element in response to advancement of said carriage in oppositedirection.

12. In aunit for dispensing. gasoline and air, an elongatedmember, a carriage, devices supporting said carriage upon and for longitudinal-movement along'said elongated member, a rotatable element upon the carriage, a hose for gasoline to lead from a source ofsupply thereof along the elongatedmember mounted on said rotatable element to be wound thereon and unwound therefrom, a conduit for the gasoline extending from said hose, a slip connection between an outle'tfrom said hose and said conduit, a reservoir on said carriage, mechanism for providing air under pressure'in said reservoir; 3. connection for air leading from the reservoir, and means for selectively advancing said carriage in either ofopp osite directions along said elongated member and for causing said e m b wound nfhg. a ab ey l m nt in ephrase 9 3 l ng aid.- q pa te member d for,

to advancement of the carriage in one direction and unwound from said rotatable element in response to advancement of said carriage in opposite direction.

13. In a unit for dispensing gasoline and air, an elongated member, a carriage, devices supporting said carriage upon and for longitudinal movement along said elongated member, a boom supported by said carriage, a rotatable element upon the carriage, a hose for gasoline to lead from a source of supply thereof along the elongated member mounted on said rotatable element to be wound thereon and unwound therefrom, a conduit for gasoline extending from said hose along said boom, a reservoir on said carriage, mechanism for providing air under pressure in said reservoir, a connection for air leading from the reservoir along said boom, and means for selectively advancing said carriage in either of opposite directions along said elongated member and for causing said hose to be wound upon the rotatable element in response to advancement of the carriage in one direction and unwound from said rotatable element in response to advancement of said carriage in opposite direction. 7

14. In a unit for dispensing gasoline and air, an elongated member, a carriage, devices supporting said carriage upon and for longitudinal movement along said elongated member, a boom supported by said carriage, a rotatable element upon the carriage, a hose for gasoline to lead from asource of supply thereof along the elongated member mounted on said rotatable element to be wound thereon and unwound therefrom, a conduit for gasoline extending from said hose along said boom, a slip connection between an outlet from said hose and said conduit, a reservoir on said carriage, mechanism for providing air under pressure in said reservoir, a connection for air leading from the reservoir along said boom, and means for selectively advancing said carriage in either of opposite directions. along said elongated member and for causing said hose to be wound upon the rotatable element in response to advancement of the carriage in one direction and unwound from said rotatable element in response to advancement of said carriage in opposite direction. t

15. In a unit for dispensing gasoline and air, an elongated member, a carriageproviding a housing, devices supporting said carriage upon and for longitudinal movement along said elongated member, a hollow boom supported by said carriage, a rotatable element in said housing, a hose for gasoline to lead from a source of supply thereof along said rotatable element to be wound thereon and unwound therefrom, a conduit for gasoline extending from said hose into said hollow boom, a slip connection between an outlet from said hose and said conduit, a reservoir on said carriage, mechanism for providing air under 'pressure in said reservoir, a connection for air leading from the reservoir into and along said hollow boom, and means for selectively advancing said carriage in either of opposite directions along said elongated member and for causing said hose to ment in response to advancement of the carriage in one direction and unwound from said rotatable element in response to advancement of said carriage in opposite di rection.

the elongated member mounted on be wound upon the rotatable ele- 16. In a unit for dispensing gasoline and air, an elongated member, a carriage, devices supporting said carriage upon and for longitudinal movement along said elongated member, booms at opposite sides of the elon gated member supported by said carriage, a rotatable element upon the carriage, a hose for gasoline to lead from a source of supply thereof along the elongated member mountedon said rotatable element to be wound thereon and unwound therefrom, a conduit for the gasoline extending from said hose along each of said booms, a reservoir on said carriage, mechanism for providing air under pressure in sa d re ervoir, a connection for air 8 leading from the reservoir along each of said booms, and means for selectively advancing said carriage in either of opposite directions along said elongated member and for causing said hose to be wound upon the rotatable element in response to advancement of the carriage in one direction and unwound from said rotatable element in response to advancement of said carriage in opposite direction.

17. In a unit for dispensing gasoline and air, an elongated member, a carriage providing a housing, devices supporting said carriage upon and for longitudinal movement along said elongated member, hollow booms supported by and extending outwardly from opposite sides of said carriage, a rotatable element in said housing, a hose for gasoline to lead from a source of supply thereof along the elongated member mounted on said rotatable element to be wound thereon and unwound therefrom, a conduit for the gasoline extending from said hose into each of said hollow booms, a reservoir on said carriage, mechanism for providing air under pressure in said reservoir, a connection for air leading from the reservoir along and into each of said hollow booms, and means for selectively advancing said carriage in either of opposite directions along said elongated member and for causing said hose to be wound upon the rotatable element in response to advancement of the carriage in one direction and unwound from said rotatable element in response to advancement of said carriage in opposite direction.

18. In a unit for dispensing gasoline, water and air, an elongated member, a carriage providing a housing, devices supporting said carriage upon and for longitudinal movement along said elongated member, hollow booms supported by and extending outwardly from opposite sides of said carriage, rotatable elements in said housing, hoses for gasoline and water to lead from a source of supply thereof along the elongated member mounted on several of said rotatable elements to be'wound thereon and unwound therefrom, a conduit for gasoline extending from said gasoline hose intoeach of said hollow booms, a flexible cable for lead wires to extend from a source of electrical supply along said elongated member mounted on a rotatable element to be wound thereon and unwound therefrom, a reservoir on said carriage, mechanism for providing air under pressure in said reservoir, a connection for air leading from the reservoir along and into each of said hollow booms, and means for selectively advancing said carriage in either of opposite directions along said elongated member and for causing said gasoline and water hoses and said flexible cable to be wound upon the corresponding rotatable elements in response to advancement of the carriage in one direction and unwound from said corresponding rotatable elements in response to advancement of said carriage in opposite direc tion.

19. The combination as specified in claim 18, and a slip connection between said gasoline hose and said conduit for gasoline.

20. In a unit for dispensing a fluid, an elongated member, a carriage, devices supporting said carriage upon and for longitudinal movement along said elongated member, a rotatable element upon the carriage, a hose for fluid to lead from a source of supply thereof along the elongated member mounted on said rotatable element to be wound thereon and unwound therefrom, a conduit for the fluid extending from said hose, first means for selectively advancing said carriage in either of opposite directions along said elongated member, second means for causing said hose to be wound upon the rotatable element in response to advance of the carriage in one direction and unwound from said rotatable element in response to advancement of said carriage in opposite direction.

21. In a unit for dispensing a fluid, an elongated member, a carriage, devices supporting said carriage upon 3 1% for longitudinal movement along said elongated mem- 9,893,422 9 10 bet, a boom rigid with said carriage, a rotatable element tion and unwound from said rotatable element in response upon the carriage, a hose for fluid to lead from a source to advancement of said carriage in opposite direction. of supply thereof along the elongated member mounted on said rotatable element to be wound thereon and un- References Cited in the file Of this Patent wound therefrom, a conduit for the fluid extending from 5 UNITED STATES PATENTS 3 93 P a f 9; gl g 1,379,562 Hecker May 24, 1921 a ancmg Sal carnage m 31 0 PP 3 lrec 0113 1 970 74 Seibert et L A 21 1934 along sald elongated member, and second means for 2,589,544 Glnter Mar. 18, 1952 ca-usmg said hose to be wound upon the rotatable element 2 756 759 Swain Jul 31 1956 to advancement of the carriage in one direcy respmse 2,764,893 Falkenberg Oct. 2, 1956 

